When flushing the pump do not hook the hydrant to a discharge to 'Back Flush' the pump.

• A. True
• B. False
• C. Not recommended
• D. Never

Answer: (A)

When flushing a pump, you want to avoid any backflow path into the municipal water system. Hooking a hydrant to a discharge to back flush the pump creates a cross-connection and can force water or debris back toward the hydrant and into the public supply if pressure changes occur. This risks contaminating potable water and can complicate the flushing process with backpressure or air issues. The proper approach is to route the flush water through a discharge to a safe drain or an approved flushing connection, not into a hydrant. So this statement is true: you should not back flush the pump by connecting a hydrant to a discharge.